Being happy with what we got, and it being the best, amazing as I hear often around here, are different things. I'd be happy if the 3rd Nolan film only had organized mob crime and a well told story. That doesn't mean I'm going to champion the vision/direction(not with Scott Snyder doing his damndest to make Batman awesome again).

I just think it could have been (alot) better.

As for closure, I personally "would have been happy" with TDK ending.
But that's me.